taxonID	type	description	language	source
21095E52CF7CC31BFDCF54536216E98D.taxon	type_taxon	Type species Healdia simplex Roundy, 1926 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	description	urn: lsid: zoobank. org: act: 2454 FD 9 D-BB 92 - 4 D 01 - BD 84 - 11011 B 2 DC 72 F Fig. 4 A – C	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	diagnosis	Diagnosis A species of Healdia with a stocky carapace, a massive overlap of LV on RV, thick posterior spines; a curved ridge extends in front of the spines.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	etymology	Etymology In reference to the ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, where this species has been discovered.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 4 A); Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample GM 5; Capitanian, Middle Permian; MNHN. F. F 63365. Paratype USA • 1 incomplete carapace (DB and PVB of LV are missing), (Fig. 4 B); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63366. Additional material USA • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample GM 5; Capitanian, Middle Permian; MNHN. F F 63367 • 3 complete carapaces; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian, Middle Permian; MNHN. F. F 63473.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	description	Dimensions L = 224 – 807 µm; H = 139 – 489 µm. Description Carapace stocky, subtriangular to ovoid in lateral view; important overlap of RV by LV with maximum along PDB; dorsal margin of LV regularly arched with Hmax at posterior ⅓ of L; dorsal margin of RV with Hmax at mid-L; AB with maximum of convexity located slightly below Hmax; VB slightly concave at both valves; PB large and close to vertical; presence of two posterior spines quite large, their bases are linked by an intra-spines tenuous ridge; in front of the spines, presence of a curved ridge, more developed than the intra-spines one; surface smooth. Occurrence Samples GM 1, 4 (GM 5), Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; MKCS 1 section, sample GM 5, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Middle Permian, Guadalupe Mountains, West Texas, USA (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF7CC314FD855511605DEC6E.taxon	discussion	Remarks Healdia mckittrickensis sp. nov. has an unique morphology. The general outline is reminiscent of Healdia subtrangula Kotschetkova, 1959 from the Kazanian (Roadian) of Bashkiria, SW of the Ural Mts (Kotschetkova 1959) but H. mckittrickensis sp. nov. has a less triangular lateral outline with thicker spines.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	description	urn: lsid: zoobank. org: act: 7615 C 462 - 45 B 0 - 4 D 0 E-A 961 - 7 E 469 B 332767 Figs 4 D – F, 5 A	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	diagnosis	Diagnosis A species of Healdia with a short and stocky carapace and a posterior ridge more or less vertical without spines, ADB longer than PDB in both valves.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	etymology	Etymology After the Cutoff Formation, Roadian, Middle Permian, West Texas that contains this species.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 4 D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 4; Roadian, Middle Permian; MNHN. F. F 63368. Paratype USA • 1 complete carapace, (Fig. 4 E); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63369. Additional material USA • 1 left valve, (Fig. 4 F); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 4; Roadian, Middle Permian; MNHN. F. F 63370 • 10 complete carapaces, 32 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian, Middle Permian; MNHN. F. F 63474.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	description	Dimensions L = 452 – 667 µm; H = 300 – 448 µm (Fig. 5 A) Description Short and stocky carapace, egg-shaped in lateral view; LV strongly overlaps RV all around the carapace; ADB longer than PDB at both valves; AB large with maximum of curvature located around mid-H; PB quite equivalent to AB; presence of a posterior vertical to slightly tilted ridge, without spines; carapace laterally compressed posterior to ridge, more strongly at LV. Occurrence Samples GM 1, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Middle Permian, Guadalupe Mountains, West Texas, USA (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF73C316FDE75173609AED83.taxon	discussion	Remarks Healdia cutoffella sp. nov. is very similar to Healdia simplissima Harlton, 1933 from the Pennsylvanian of Texas and Oklahoma (Harlton 1933; Hoare & Merrill 2004). Both species have the same ridge without spines, equivalent AB and PB, but mainly differ by PB being longer than AB in H. simplissima (herein AB is longer than PB).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF71C316FD89515F62EBEC9D.taxon	type_taxon	Type species Sulcella sulcata Coryell & Sample, 1932 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF71C316FDE45602635BE8A2.taxon	description	Fig. 4 G – I	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF71C316FDE45602635BE8A2.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63371 • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63372 • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 2; Roadian, Middle Permian; MNHN. F. F 63373 • 3 complete carapaces, 10 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 3, GM 4; Roadian; MNHN. F. F 63653 • 2 complete carapaces, 7 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63475.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF71C316FDE45602635BE8A2.taxon	distribution	Occurrence Bükk Mountains, Hungary, Capitanian – Wuchiapingian, Middle – Late Permian (Kozur 1991); Hydra Island, Greece, Capitanian – Wuchiapingian, Middle – Late Permian (Crasquin-Soleau & Baud 1998); Chaotian section, Sichuan, South China, Wuchiapingian, Late Permian (Zazzali et al. 2015); Pha Nok Khao Formation, Khao Kana section, Phetchabun Province, central Thailand, Sakmarian – Artinskian, Early Permian (Chitnarin et al. 2017); Quarry section, samples GM 1, GM 3, GM 4, Williams Ranch Member, Cutoff Formation, Roadian; MKCS 1 section, samples 4 (GM 5) and 2 (GM 6), ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C311FDC6563C6208EBF2.taxon	type_taxon	Type species Amphissites rugosus Girty, 1910 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C311FDCA53856552EC8A.taxon	description	Fig. 4 J	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C311FDCA53856552EC8A.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63374.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C311FDCA53856552EC8A.taxon	discussion	Remarks This specimen shows a clear oval kirkbyan pit in the middle part of the valve. The right valve has PB and AB with a different radius of curvature, whereas they are quite equivalent in Kirkbyidae. Herein, the PB has a very small radius of curvature and AB a large one. The ornamentation is coarse.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C311FDCA53856552EC8A.taxon	distribution	Occurrence Sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C310FE5556E8609BEC92.taxon	description	Fig. 4 K – L	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C310FE5556E8609BEC92.taxon	materials_examined	Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63375 • 1 right valve; same locality as preceding; Roadian, Middle Permian; MNHN. F. F 63376 • 24 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian, Middle Permian; MNHN. F. F 63476.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF76C310FE5556E8609BEC92.taxon	distribution	Occurrence Kansas, USA, Carboniferous (Ulrich & Bassler 1906); Oklahoma, USA, Pennsylvanian (Harlton 1927); Texas, USA, Pennsylvanian (Coryell & Billings 1932); USA, Gzhelian, Pennsylvanian, Sakmarian – Artinskian, Early Permian (Kellett 1933); Kansas, USA, Carboniferous – Permian (Sohn 1961 b); Japan, Capitanian, Middle Permian (Ishizaki 1964); Illinois, USA, Early Pennsylvanian (Thompson & Shaver 1964); Russian Platform, Late Permian (Schneider 1966); Illinois, USA, Pennsylvanian (Shaver & Smith 1974); Asturias, Spain, Late Carboniferous (Sanchez de Posada 1977); Ohio, USA, Pennsylvanian (Burke 1985); Bükk Mountains, Hungary, Moscovian, Late Carboniferous (Kozur 1991); Henan Province, East China, Late Carboniferous (Zhang & Liang 1987); Texas, USA, Pennsylvanian – Kungurian (Melnyk & Maddocks 1988); Bonaparte Basin, Australia, Early Carboniferous (Jones 1988, 1989); Appalachian Basin, USA, Pennsylvanian (Christopher et al. 1990); South China, Tournaisian, Early Carboniferous (Becker & Wang 1992; Olempska 1999); British Columbia, Canada, Sakmarian – Artinskian, Early Permian (Crasquin-Soleau & Orchard 1994; Crasquin-Soleau 1997); Cantabrian Mountains, Spain, Pennsylvanian (Becker 1997); Carnic Alps, Austria, Asselian, Early Permian (Fohrer 1997); Perth Basin, Australia, Sakmarian, Early Permian (Ferdinando 2001); West Texas, USA, Middle Permian, Roadian, Quarry section, samples GM 1, GM 4, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C310FDC2571E6016E862.taxon	description	Fig. 4 N	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C310FDC2571E6016E862.taxon	materials_examined	Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63378 • 3 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian, Middle Permian; MNHN. F. F 63477.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C310FDC2571E6016E862.taxon	distribution	Occurrence Texas, USA, Roadian, Middle Permian (Sohn 1954); samples GM 1, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C310FDD75654626EEB84.taxon	type_taxon	Type species Kindlella fissiloba Sohn, 1954 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C313FDA555776267EC63.taxon	description	Fig. 4 P – Q	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C313FDA555776267EC63.taxon	materials_examined	Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63380 • 1 right valve; same locality as for preceding; Capitanian, Middle Permian; MNHN. F. F 63381.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C313FDA555776267EC63.taxon	discussion	Remarks The specimens have a transitional morphology between Kindlella Sohn, 1954 and Kellettina Swartz, 1936. They have the carapace outline and characters of Kindlella and lobes overpassing the DB as in Kelletina.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF77C313FDA555776267EC63.taxon	distribution	Occurrence West Spitzbergen, Norway, Wuchiapingian, Late Permian (Olempska & Błaszyk 1996); sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF74C313FDDC5741651BEAA9.taxon	type_taxon	Type species Dithyrocaris permiana Jones, 1850 subsequently designated by Jones (1859).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C312FDC5538C6502ED6D.taxon	type_taxon	Type species Kindlella wordensis Hamilton, 1942 subsequently designated by Sohn (1950).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	description	urn: lsid: zoobank. org: act: FD 8 EB 2 E 1 - 3 BDB- 4 A 75 - ADA 2 - 4 FB 287 EB 27 AA Figs 5 B, 6 A – B	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	diagnosis	Diagnosis A species of Aurikirkbya with an additional ventral ridge parallel to the adventral ridge, extending from mid-H in the anterior part to mid-H in the posterior part of the carapace.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	etymology	Etymology After the Guadalupe Mountains, West Texas, USA, where this species has been discovered.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 6 A); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 2; Roadian, Middle Permian; MNHN. F. F 63383. Paratype USA • 1 complete carapace, (Fig. 6 B); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63384. Additional material USA • 8 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2, and GM 3; Roadian, Middle Permian; MNHN. F. F 63478.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	description	Dimensions L = 829 – 1280 µm; H = 368 – 660 µm (Fig. 5 B). Description Carapace sub-rectangular in lateral view with Hmax located in anterior half; Lmax located in dorsal part of Hmax; DB long and straight; posterior shoulder clearly expressed, ACA close to 90 ° or slightly obtuse; PCA close to 90 ° or slightly acute; AB with large radius of curvature with maximum located around mid-H; VB almost straight with weak median concavity, parallel to DB; PB with small radius of curvature and maximum located close to DB; 2 vertical lobes connected above kirkbyan pit by small sub-horizontal lobe; kirkbyan pit located at mid-L and below mid-H; two important ridges along free margins, one ventral and one adventral; marginal structure underlined by tubercles; adventral ridge smooth as well as areas around cardinal angles; additional ridge parallel to adventral one, extending from mid-H in anterior part up to mid-H in posterior part of the carapace; presence of a dorsal shield characteristic of the genus; surface reticulate. Occurrence Samples GM 1, GM 2, and GM 3, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF75C30CFDA850736567EA8C.taxon	discussion	Remarks Aurikirkbya guadalupensis sp. nov. differs from the three species described by Sohn (1950) (A. wordensis (Hamilton, 1942), A. barbarae Sohn, 1950 and A. auriformis Sohn, 1950) from the Roadian (upper Leonardian or lower Wordian in the sense of Sohn 1950) of the Glass Mountains, Texas by a smaller PB and a diagnostic ridge. Aurikirkbya kelletae (Harlton, 1929) from the Pennsylvanian of Texas and Aurikirkbya miyakei Yanaka & Ono in Tanaka et al., 2012 from the Early Permian of Japan (Tanaka et al. 2012) have a similar carapace shape but differ by the diagnostic ridge.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6BC30FFD83541563C9EEF4.taxon	description	Fig. 6 C, E	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6BC30FFD83541563C9EEF4.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63385 • 1 valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 4; Roadian; MNHN. F. F 63387 • 1 valve; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63479. Occurrence Texas, USA, Roadian, Middle Permian (Hamilton 1942; Sohn 1950); sample GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; samples GM 5 and GM 6, MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFE1550E36552EA2A.taxon	description	Fig. 6 D	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFE1550E36552EA2A.taxon	materials_examined	Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63386.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFE1550E36552EA2A.taxon	discussion	Remarks This specimen could belong to a new species with regard to the ornamentation of the carapace that consists of small ridges on the anterior part and a reticulation on the posterior part. The general shape is similar to that of Kirkbyella (Berdanella) quadrata Croneis & Gutke, 1939 sensu Hoare & Mapes 2000 from the Mississippian of Arkansas (Hoare & Mapes 2000) but in this species the reticulation is organised quite horizontally and here it is more oblique.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFE1550E36552EA2A.taxon	distribution	Occurrence Sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFD83503962F6EDFE.taxon	type_taxon	Type species Kirkbyella typa Coryell & Booth, 1933 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30FFDE857DA65E9E91C.taxon	type_taxon	Type species Amphissites simplicissimus Knight, 1928 subsequently designated by Bradfield (1935).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30EFD845485605BECD4.taxon	description	Fig. 6 F – H	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30EFD845485605BECD4.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 4; Roadian, Middle Permian; MNHN. F. F 63388 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63389 • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1; Roadian, Middle Permian; MNHN. F. F 63390 • 5 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian; MNHN. F. F 63654 • 3 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5) Capitanian; Middle Permian; MNHN. F. F 63480.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF68C30EFD845485605BECD4.taxon	distribution	Occurrence German basin, Werrakarbonate, Zechstein (Knüpfer 1967); USSR, Baltic region, Novoakmyanskaya svita (Ivanov 1975); Polish lowlands, cyclothem PZ 1, Zechstein (Woszczyńska 1987); Bükk Mountain, Hungary, Wuchiapingian, Late Permian (Kozur 1991); southwest Spitzbergen, Norway, Wuchiapingian, Late Permian (Olempska & Błaszyk 1996); samples GM 1, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian, Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C30EFDFB5655620AEB9A.taxon	type_taxon	Type species Hollinella dentata Coryell, 1928 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	description	urn: lsid: zoobank. org: act: 2 A 663 FBA- 1 BBF- 481 E-B 29 E- 1 EF 99 A 05 F 293 Figs 5 C, 6 I – L	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	diagnosis	Diagnosis A species of Hollinella (Hollinella) with a subvertical L 1 in continuation of the ventral lobe and dorsally ended by a small nodule / spine; spine at the posterior part of the velum.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	etymology	Etymology After Williams Ranch Member, Bell Canyon Formation, Capitanian, West Texas where this species has been discovered.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	materials_examined	Material examined Holotype USA • right valve, (Fig. 6 I); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63391. Paratype USA • 1 left valve, (Fig. 6 K); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63393. Additional material USA • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63392 • 1 left valve; same locality as for preceding but sample GM 4; Roadian, Middle Permian; MNHN. F. F 63394 • 2 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4, Roadian; MNHN. F. F 63655 • 6 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5), Capitanian; Middle Permian; MNHN. F. F 63481.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	description	Dimensions L = 776 – 1318 µm; H = 434 – 773 µm (Fig. 5 C). Description Carapace auriform and elongate in lateral view; Hmax at ACA; Lmax at mid-L; DB long and straight; presence of cardinal spine at PCA; AB with maximum of curvature at or below mid-H; VB straight; PB with quite large radius of curvature underlined by nodules; presence of a granular velum that ends by posterior spine; L 1 well expressed, vertical and in continuation of ventral lobe, ended dorsally by small nodule / spine; L 2 well expressed, peaked, with small nodule; L 3 covered by nodules, higher than DB; surface granular; intraspecific variations observed in velum formed by small spines (Fig. 6 L) and blade (Fig. 6 I). Occurrence Samples GM 1, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 4 (GM 5) MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF69C309FE1457006332EA33.taxon	discussion	Remarks Hollinella (Hollinella) williamsranchensis sp. nov. is reminiscent of H. warthini Cooper, 1946 from the Missourian – Virgilian (Late Pennsylvanian) of USA (see synthesis in Christopher et al. 1990) by the carapace shape, spines at PCA and posterior part of the velum and the granular surface. However, in H. warthini, L 1 is not visible and L 2 and L 3 are more bulbous. Hollinella (Hollinella) williamsranchensis sp. nov. has the same ornamentation on L 3 as H. (H.) lungcamensis Crasquin, 2018 from the Permian – Triassic boundary of North Vietnam (Crasquin et al. 2018), which is stockier (H / L = 0.55 – 0.65 herein, 0.65 – 0.75 for H. (H.) lungamensis).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6EC309FDFF5406622CE9D6.taxon	type_taxon	Type species Glyptopleura inopinata Girty, 1910 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC308FDCE5099658EEC5A.taxon	type_taxon	Type species Beyrichiella gregaria Ulrich & Bassler, 1906 subsequently designated by Johnson (1936).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	description	urn: lsid: zoobank. org: act: FA 68573 E-E 0 FA- 4 DC 1 - B 82 E- 6 F 860628863 F Fig. 6 N – P	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	diagnosis	Diagnosis A species of Geisina with a pustulose carapace, two large spines in the posterior part of the carapace and free margins bordered with small spines.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	etymology	Etymology From Culberson County, West Texas, USA, where the studied samples have been collected.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 6 N); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63396. Paratype USA • 1 complete carapace, (Fig. 6 O); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63397. Additional material USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 2; Roadian, Middle Permian; MNHN. F. F 63398 • 1 complete carapace, 4 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2, GM 4; Roadian, Middle Permian; MNHN. F. F 63483.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	description	Dimensions L = 602 – 676 μm; H = 430 – 548 μm; H / L = 0.53 – 0.64. Description Carapace sub-rectangular in lateral view with Hmax in anterior ⅓ rd of L and Lmax slightly below mid-H; DB long and straight; ACA = 115 ° – 130 °, PCA = 105 ° – 115 °; AB with large radius of curvature with maximum at lower ⅓ rd H; VB nearly straight; PB laterally compressed, large with maximum of curvature located at mid-H; free margins bordered by small spines; L 2 not well visible; S 2 round and clearly marked; L 3 underlined by two large spines, one dorsal and one medio-ventral, pointing upward; surface completely covered with pustules. Occurrence Samples GM 1, GM 2, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, Western Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6FC30BFD81515D650DEDC9.taxon	discussion	Remarks Geisina culbersonensis sp. nov. has a very particular shape and primary ornamentation. It can be compared with Geisina sp. in Chitnarin et al. 2012 from the Asselian – Sakmarian, Early Permian of Thailand (Chitnarin et al. 2012), which has a smaller PB and a smooth surface.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30BFDB9544A62A1E9AB.taxon	type_taxon	Type species Libumella discoides Rozhdestvenskaya, 1959 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30BFDF251BA6339EABE.taxon	description	Fig. 6 Q – R	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30BFDF251BA6339EABE.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63399 • 1 left valve; same locality as for preceding; Capitanian, Middle Permian; MNHN. F. F 63400 • 2 right valves; same locality as for preceding; Capitanian, Middle Permian; MNHN. F. F 63484. Occurrence Sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30BFDF251BA6339EABE.taxon	discussion	Remarks This species is similar to Miltonella shupei Sohn, 1950 from the Middle Permian of Texas (Sohn 1950). Herein, the specimens are shorter and the characteristic ridge of the genus begins at ACA and finishes at PCA (instead of PB in type species).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30BFDCF50F86266EC25.taxon	type_taxon	Type species Miltonella shupei Sohn, 1950 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30AFD81550C6419ED60.taxon	description	Fig. 7 A	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30AFD81550C6419ED60.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63401.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30AFD81550C6419ED60.taxon	distribution	Occurrence Sample GM 1, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6CC30AFD81550C6419ED60.taxon	discussion	Remarks The specimen is similar to Libumella athabascensis Green, 1963 from the Mississippian of the Rocky Mountains, Canada (Green 1963; Crasquin 1985) and from the Late Permian of South China (Yuan et al. 2007). Nevertheless, it differs by the presence of a nodule in the dorso-median part of the carapace.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6DC30AFDB550CA654DEC2F.taxon	type_taxon	Type species Paraparchites humerosus Ulrich & Bassler, 1906 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6DC304FDE951B160FFED2C.taxon	description	Fig. 7 C	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6DC304FDE951B160FFED2C.taxon	description		en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6DC304FDE951B160FFED2C.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63403 • 2 complete carapaces; same locality as for preceding; Capitanian, Middle Permian; MNHN. F. F 63485.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF6DC304FDE951B160FFED2C.taxon	distribution	Occurrence Menar and Tom Green Counties, Texas, USA, Kungurian (Arroyo Formation), Early Permian (Sohn 1971 and all references therein); sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Guadalupian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	description	urn: lsid: zoobank. org: act: E 76693 E 7 - FD 8 A- 4 E 7 B- 9328 - 6 D 3248 AC 584 F Figs 5 D, 7 D – H	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	diagnosis	Diagnosis A species of Paraparchites with a small hemi-circular ridge at mid-H of PB on both valves and a weak overreach of RV above hinge-line.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	etymology	Etymology In reference to the Pecos River, West Texas, USA.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 7 D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63404. Paratype USA • 1 complete carapace, (Fig. 7 H); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63408. Additional material USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63405 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63407 • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample GM 6; Capitanian, Middle Permian; MNHN. F. F 63406 • 1 complete carapace, 52 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2, GM 3; Roadian; MNHN. F. F 63656 • 15 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6), Capitanian; Middle Permian; MNHN. F. F 63486.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	description	Dimensions L = 503 – 2100 µm; H = 341 – 1467 µm (Fig. 5 D). Description Carapace stocky (H / L = 0.69 – 0.75) sub-rectangular in lateral outline; DB straight at LV; DB a little convex with weak overreach of RV above hinge-line; AB and PB quite equivalent with large radius of curvature, maximum of curvature around mid-H; VB nearly straight; LV overlaps RV all around free margins; presence of small hemi-circular ridge at mid-H of PB on both valves.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	distribution	Occurrence Samples GM 1, GM 2, and GM 3, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF63C307FDBC50B3652EED01.taxon	discussion	Remarks Paraparchites pecosensis sp. nov. has a lateral outline similar to that of Paraparchites texanus Ulrich & Bassler, 1906 emend. Scott, 1959 from the Early Permian of Texas (Scott 1959). The main difference between the two species is the small hemi-circular ridge at PB in the new species.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF60C307FDDB5709625BEAEA.taxon	type_taxon	Type species Acratia typica Delo, 1930 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF60C307FDC257CF632CE8A2.taxon	description	Fig. 7 K	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF60C307FDC257CF632CE8A2.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63411 • 1 complete carapace, 2 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 4; Roadian, Middle Permian; MNHN. F. F 63487.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF60C307FDC257CF632CE8A2.taxon	distribution	Occurrence Bükk Mountains, Hungary, Early Wuchiapingian, Late Permian (Kozur 1991); samples GM 1, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF60C307FDCD511E631CEBB9.taxon	discussion	Preliminary remarks The classification of ornate Bairdiidae is complex and still disputed mainly because of the difficulty to unravel the taxonomic significance of their lateral ornamentation features. As detailed in Forel & Grădinaru (2020), the revision of their classification requires the addition of new characters to avoid producing another classification system that would only be a new point of view further complicating the current situation. The peak of diversity of ornate Bairdiidae occurred in the Late Triassic but they were already present in the Permian (see Forel & Crasquin 2020 and references therein for a review) as illustrated for instance by the material described herein from the Middle Permian of the Guadalupe Mountains. Specifically, the confusion and instability of the conceptions of Petasobairdia Chen, 1982 and Praelobobairdia Kozur, 1991 have recently been described and discussed in Forel & Grădinaru (2020). Herein, we follow the view that Praelobobairdia is a junior synonym of Petasobairdia, as was first introduced by Becker (2001).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FDD453196527EEC5.taxon	type_taxon	Type species Bairdia curta McCoy, 1844 subsequently designated by Ulrich & Bassler (1923).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FDC253D963F4EBC8.taxon	description	Fig. 7 L – M	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FDC253D963F4EBC8.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63412 • 1 complete carapace; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63413 • 78 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2, and GM 4; Roadian; MNHN. F. F 63657 • 27 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6), Capitanian; Middle Permian; MNHN. F. F 63488.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FDC253D963F4EBC8.taxon	distribution	Occurrence Kansas, USA, Asselian, Sakmarian, Early Permian (Kellett 1934); samples GM 1, GM 2, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Middle Permian, Guadalupe Mountains, West Texas, USA (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FD9D56AD63B3E9B9.taxon	description	Fig. 7 N	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FD9D56AD63B3E9B9.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63414 • 1 complete carapace; same locality as for preceding but sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63489.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C306FD9D56AD63B3E9B9.taxon	distribution	Occurrence Texas, USA, Roadian, Middle Permian (Hamilton 1942); samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C301FD92553C6304ED83.taxon	description	Fig. 7 O	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C301FD92553C6304ED83.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63415 • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1, Roadian; MNHN. F. F 63658 • 1 left valve; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63490.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF61C301FD92553C6304ED83.taxon	distribution	Occurrence Glass Mountains, West Texas, USA, Roadian, Middle Permian (Hamilton 1942); sample GM 1, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	description	urn: lsid: zoobank. org: act: 4 DDDDD 5 C- 6 D 2 B- 45 E 5 - 8 B 59 - 427 C 19 C 96 DD 7 Figs 7 P – R, 8 A – B	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	diagnosis	Diagnosis A species of Bairdia with asymmetric valves and with a strong overlap along DB; ADB concave at RV and dorsal margin uniformly convex; PD and AD angles laterally compressed at RV.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	etymology	Etymology In reference to the El Capitan Peak located within the Guadalupe Mountains National Park, Guadalupe Mountains, West Texas, USA.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	materials_examined	Material examined Holotype USA • right valve, (Fig. 8 B); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63420. Paratype USA • 1 right valve, (Fig. 7 R); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63418. Additional material USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63416 • 1 carapace; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63417 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 634119 • 16 right valves; same locality as for preceding but samples GM 1, GM 2; Roadian, Middle Permian; MNHN. F. F 63491.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	description	Dimensions L = 1250 – 1386 µm; H = 635 – 761 µm. Description Carapace sub-triangular in lateral view with asymmetric valves and overlap of LV all around RV with maximum along DB; lateral surface smooth. LV: Hmax around mid-L; dorsal margin uniformly convex with PDB and ADB almost straight; AB with small radius of curvature located above mid-H; VB straight to only gently concave; PB narrow with maximum of convexity located very ventrally. RV: Hmax located at AD angulation; DB long and straight, gently bent posteriorly; PDB straight with terminal concavity; ADB concave; PD angle (130 – 135 °) and AD angle (135 – 140 °) laterally compressed; AB with relatively small radius of curvature, located above mid-H; oral concavity in front of mid-L at ventral margin; PB slighted.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	distribution	Occurrence Samples GM 1 and GM 2, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF66C300FD9B5116653FECC3.taxon	discussion	Remarks Bairdia girtyi Sohn, 1960 sensu Hoare & Merrill, 2004 from the Pennsylvanian of Texas (Hoare & Merrill 2004) is similar to Bairdia elcapitanensis sp. nov. by its lateral morphology, but lacks the AD and PD angulations at RV. It is worth noting that the specimens of Hoare & Merrill (2004) do not belong to Bairdia girtyi Sohn, 1960 from the Late Mississippian of USA (Sohn 1960), because Bairdia girtyi is more elongate, with PB located higher and Hmax located slightly behind mid-H.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF67C302FD6F51D46247EC5D.taxon	description	Fig. 8 D	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF67C302FD6F51D46247EC5D.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63422 • 1 complete carapace, 4 valves; same locality as for preceding; Roadian, Guadalupian, Middle Permian; MNHN. F. F 63492.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF67C302FD6F51D46247EC5D.taxon	discussion	Remarks Bairdia sp. A is extremely similar to Bairdia salemensis Geis, 1932 from the Mississippian of Indiana (Geis 1932) that was later considered as a junior synonym of Bairdia permagna Geis, 1932 by Sohn (1960). Sohn (1960) more precisely stated that the type specimens of Bairdia salemensis are young juveniles of Bairdia permagna, although dimensions provided by Geis for Bairdia salemensis are of Lmean = 1450 µm, Hmean = 685 µm. In the present analysis, Bairdia sp. A is morphologically closer to specimens considered as young juveniles of Bairdia permagna than to adults and their dimensions are very similar to those reported for Bairdia salemensis with Lmean = 1500 µm, Hmean = 500 µm. Herein, however, all specimens at hand assigned to Bairdia sp. A are not abundant enough to discuss their ontogenetic development and verify the conspecificity of the species.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF67C302FD6F51D46247EC5D.taxon	distribution	Occurrence Sample GM 1, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C302FE50561C65A3E9D2.taxon	description	Fig. 8 I – J	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C302FE50561C65A3E9D2.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63427 • 1 right valve; same locality as for preceding but sample GM 4; Roadian, Middle Permian; MNHN. F. F 63428 • 9 valves; same locality as for preceding but samples GM 1, GM 2, and GM 4; Roadian, Middle Permian; MNHN. F. F 63493.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C302FE50561C65A3E9D2.taxon	distribution	Occurrence Kansas, Texas, Illinois, USA, Pennsylvanian (Coryell & Billings 1932; Sohn 1960); Nebraska, USA, Permian (Sohn 1960); samples GM 1, GM 2, and GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C302FDF6512F62C6EC87.taxon	type_taxon	Type species Fabalicypris wileyensis Cooper, 1946 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C33DFD8F54C865D7ED16.taxon	description	Fig. 8 K	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C33DFD8F54C865D7ED16.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63429.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF65C33DFD8F54C865D7ED16.taxon	distribution	Occurrence Kansas, Oklahoma, USA, Kasimovian, Pennsylvanian (Harlton 1927; Kellett 1935; Sohn 1960); Hubei, China, Kungurian, Early Permian (Yi 1993); Sichuan, China, Changhsingian, Late Permian (Shi & Chen 2002); sample 4 (GM 5), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5AC33DFDF2554A62E2E8A3.taxon	type_taxon	Type species Ceratobairdia dorsospinosa Sohn, 1954 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5AC33DFDFF5096654FEC5E.taxon	type_taxon	Type species Bairdia cestriensis Ulrich, 1891 subsequently designated by Sohn (1960).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5AC33DFD9B51436304E879.taxon	description	Fig. 8 M – N	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5AC33DFD9B51436304E879.taxon	materials_examined	Material examined USA • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63431 • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63432 • 3 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian; MNHN. F. F 63659 • 10 valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6), Capitanian; Middle Permian; MNHN. F. F 63494.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5AC33DFD9B51436304E879.taxon	distribution	Occurrence Kansas, Texas, Missouri, Oklahoma, Nebraska, Illinois, Ohio, USA, Pennsylvanian (Sohn 1960 and all references therein); Glass Mountains, West Texas, USA, Roadian, Middle Permian (Hamilton 1942); Ischimbaev District (North Ural?), Russia, Early Permian (Sohn 1960); Germany, Permian (Sohn 1960); Appalachian Basin, USA, Pennsylvanian (Hoare et al. 1999); sample GM 1, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	description	urn: lsid: zoobank. org: act: 52 B 30 AEF-EB 47 - 4 D 12 - A 0 BC- 20 EC 095 A 2 F 6 F Figs 5 E, 8 O – R, 9 A – C	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	diagnosis	Diagnosis A species of Ceratobairdia with three spines, two long and one short, along the dorsal margin of LV and the ventro-lateral ala not terminated by spine.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	etymology	Etymology From the tribe of Mescalero Apaches who inhabited parts of the Southwest US and Northwest Mexico.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	materials_examined	Material examined Holotype USA • left valve, (Fig. 8 O); Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63433. Paratypes USA • 1 left valve (Fig. 9 A); Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63435 (Fig. 8 Q) • 1 right valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN. F. F 63437. Additional material USA • 1 left valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63434 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN. F. F 63436 • 1 left valve; same locality as for preceding but sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63438 • 1 left valve; same locality and sample as for preceding; Capitanian, Middle Permian; MNHN. F. F 63439. • 13 valves; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63495.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	description	Dimensions See Fig. 5 E. Description LV: stocky, subtriangular in lateral view with Hmax along DB and Lmax in lower half of H; dorsal margin uniformly arched with concave ADB and PDB, and apex of curvature with 3 equidistant spines; the 3 spines triangular in shape and thickest at base, central spine sub-vertical, external spines biggest, anterior one oriented anteriorly and posterior one oriented posteriorly; AB beak-like located in upper fourth of H with long and subvertical AVB; ventral margin uniformly convex; PB beak-like, located below mid-H; anterior and posterior margins laterally compressed; ventro-lateral ala delimited by smooth subhorizontal ridge lacking terminal spine. RV: elongate, subtriangular in lateral view with Hmax at AD angulation and Lmax below mid-H; dorsal margin tripartite with DB slightly convex, very concave ADB and PDB; AB beak-like located in upper fourth of H with AVB long and straight; PB beak-like located in lower third of H; ventral margin long and straight except for tenuous oral concavity in anterior part; anterior and posterior margins laterally compressed; lateral surface inflated dorsally into narrow platform and ventrally delimited by lateroventral ala lacking terminal spine and raising upward anteriorly. Occurrence Samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5BC33EFDB8531860D5E9E7.taxon	discussion	Remarks Ceratobairdia dorsospinosa Sohn, 1954 from the Roadian, Middle Permian of Texas (Sohn 1954) is morphologically very similar to Ceratobairdia mescaleroella sp. nov., but the new species differs by its relatively smaller dimensions, three thicker dorsal spines, lack of a terminal sharp spine at the latero-ventral ridge and PB located higher and more upturned. Sohn (1954) observed that specimens of Ceratobairdia dorsospinosa Sohn, 1954 have one or two spines along the dorsal margin of LV. However, all other characters of the carapaces and valves are very similar, so he suggested that all specimens are conspecific. Although very similar morphologically, Ceratobairdia mescaleroella sp. nov. cannot be considered as another degree in the variability of Ceratobairdia dorsospinosa Sohn, 1954 as the lateral morphologies of the two species are significantly different as detailed above. Contrary to what was shown for Ceratobairdia dorsospinosa Sohn, 1954, Ceratobairdia mescaleroella sp. nov. has a conservative number and position of dorsal spines, the only difference observed is in the expression of the central spine.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	description	urn: lsid: zoobank. org: act: E 353 B 465 - EF 88 - 46 B 2 - A 3 E 0 - 5 C 7 C 3 B 2 AB 411 Figs 5 F, 9 D – J	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	diagnosis	Diagnosis A species of Ceratobairdia with a lamellar overlap of LV over RV and a curved latero-ventral ridge delimiting a flat venter lacking a posterior spine.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	etymology	Etymology From the Latin ‘ s exaginta duo ’, meaning ‘ 62 ’, referring to the location of the studied sections along the Highway 62.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 9 D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63440. Paratype USA • 1 left valve, (Fig. 9 E); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63441. Additional material USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63442 • 1 complete carapace; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63443 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63444 • 1 complete carapace; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63445 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63446 • 29 complete carapaces, 368 valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2; Roadian, Middle Permian; MNHN. F. F 63496.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	description	Dimensions L = 753 – 1488 µm; H = 389 – 925 µm (Fig. 5 F, not all valves measured, all RV correspond to complete carapaces). Description Massive carapace (H / L = 0.58 – 0.71); AB with small radius of curvature and maximum located at mid-H, dorsal part of AB forms a right angle with ADB at RV; VB straight at RV and convex at LV; PB short, with small radius of curvature located in lower ⅓ rd of Hmax; latero-ventral ridge developed along the VB; strong overlap of LV on RV particularly at DB developed into blade; surface smooth. Occurrence Samples GM 1, GM 2, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF59C338FDAB54FB65D1EE22.taxon	discussion	Remarks Ceratobairdia sexagintaduella sp. nov. is similar to Bairdia monstrabilis Cooper, 1946 from the Pennsylvanian of Illinois (Cooper 1946) but differs by a shorter carapace, a shorter latero-ventral ridge and the presence of a blade along the dorsal overlap at LV. Noteworthy, Sohn (1954) considered that Bairdia monstrabilis Cooper, 1946 does not belong to Ceratobairdia mainly because of the lack of a dorsal structure at LV. Lobobairdia ventriconcava (Chen, 1958) in Chen & Bao, 1986 from the Early Permian of South China (Chen & Bao 1986) is similar to Ceratobairdia sexagintaduella sp. nov., but has an even shorter latero-ventral ridge and lacks the dorsal blade at LV. The morphology of the latero-ventral ridge in Ceratobairdia sexagintaduella sp. nov. is similar to that of Ceratobairdia sinensis Wang, 1978 from the Changhsingian, Late Permian of South China (Wang 1978) by the morphology of the lateroventral ridge but differs by lamellar DB at LV, PB less upturned and AB located lower. Ceratobairdia sexagintaduella sp. nov. is very similar to Bairdia permiana Hamilton, 1942 from the Kungurian of the Glass Mountains (Hamilton 1942): this species has later been shown to be a junior synonym of Bairdia pecosensis Delo, 1930 by Sohn (1960), who additionally mentioned that the ridge on the ventral part of the RV is not as pronounced as shown in the original drawing of Hamilton (1942).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5FC33AFDB853B66356EBF8.taxon	description	Figs 9 K – R, 10	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5FC33AFDB853B66356EBF8.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63447 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63448 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63449 • 1 right valve; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63450 • 1 right valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63497 • 1 right valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63451 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63452 • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63453 • 1 broken carapace, 20 left valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2, and GM 3; Roadian; MNHN. F. F 63660 • 3 broken carapaces, 15 left valves; same locality as for preceding; ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6), Capitanian; Middle Permian; MNHN. F. F 63498.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5FC33AFDB853B66356EBF8.taxon	description	Dimensions L = 727 – 1450 µm; H = 397 – 920 µm (Fig. 10, not considering spines). Occurrence Glass Mountains, Texas, USA, Roadian, Middle Permian (Hamilton 1942; Sohn 1954, 1960); samples GM 1, GM 2, and GM 3, Quarry section, Williams Ranch Member, Cutoff Formation, Roadian; samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Capitanian; Guadalupe Mountains, West Texas, USA, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5FC33AFDB853B66356EBF8.taxon	discussion	Remarks Most of the specimens of Ceratobairdia wordensis (Hamilton, 1942) in the present work occur as isolated valves and LV are relatively easily assigned to this species based on their unique dorsal ornamentation. The identification of RV is more complex and has been possible because of the description provided by Hamilton (1942: 716) of “ the centrodorsal portion of the right valve flattens abruptly to hingeline, expressed as a flat terrace in dorsal bi and as a rather prominent ridge in lateral view; […]; the ventral portion of the right valve sharply infolded, forming a sharp downward projecting ridge terminating in mature molds as a backward projecting spine. ” Hamilton (1942: 716) described the dorsal margin of LV of Ceratobairdia wordensis as “ usually ornamented by two to seven short strong spines equally spaced and concentrated dorsally on the middle third or more. ” The present material provided LV with 4 to 6 spines, but all other characters leave no doubt on the conspecificity of the specimens. Is the number of spines related to ontogeny? Although Hamilton (1942) mentioned 2 to 7 dorsal spines on LV, the unique specimen illustrated displays 6 spines and no discussion is provided on the possible link between size and number of the spines. Conversely, Sohn (1960: pl. 4 figs 12, 14, 17) illustrated specimens with 8 to 10 dorsal spines and at least one of them shows spines organized into 2 overlapping rows. For the present material, the number of spines along the dorsal margin of LV of Ceratobairdia wordensis ranges from 4 to 6 without pattern related to ontogeny (Fig. 10): • most of the smallest specimens, assigned to A- 2?, are weathered but the two sufficiently well preserved at dorsal margin show 5 spines, the 2 external being ‘ embryonic’, • the only known specimen of A- 1? stage displays 4 dorsal spines, • the adult specimens display from 4 to 6 spines, the external ones being the smallest. It is worth noting that in A- 2? specimens, the external spines are very small and may be overlooked, leading to the wrong identification of only 3 dorsal spines. However, these specimens cannot be confused with Petasobairdia tricornuta Chen in Shi & Chen, 2002 from the Late Permian of South China (Shi & Chen 2002) which is more elongate, larger, and with only 3 spines for specimens of a size slightly larger than the adults of Ceratobairdia wordensis. A significant morphological trend is observed in Ceratobairdia wordensis from the Guadalupe Mountains: whereas the majority of specimens have a relatively smooth surface, several show the development of scattered nodules in the dorsal area of their lateral surface (Fig. 9 O – Q). This trend culminates in very rare specimens with the entire lateral surface of the valves covered by nodules (Fig. 9 R). This nodular surface is reminiscent of Pustulobairdia Sohn, 1960 but all characters of Ceratobairdia wordensis and the morphological trend observed from smooth to nodular leave no doubt that these specimens belong to Ceratobairdia wordensis.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	description	urn: lsid: zoobank. org: act: 97132 C 11 - D 593 - 4 D 25 - AFA 4 - 05 B 453873 EA 4 Figs 5 G, 11 C – G	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	diagnosis	Diagnosis A species of Ceratobairdia with a nodular dorsal blade at LV displaying 6 very small triangular nodules?, AB and PB prolonged by short horizontal spines, posterior end reduced.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	etymology	Etymology Named after the geologist Wallace Pratt who donated a part of the McKittrick Canyon which became part of the Guadalupe Mountains National Park, Guadalupe Mountains, West Texas, USA.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	materials_examined	Material examined Holotype USA • complete carapace (Fig. 11 C); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63456. Paratype USA • 1 left valve, (Fig. 11 D); Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63457. Additional material USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 1; Roadian, Middle Permian; MNHN. F. F 63458 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63459 • 1 left valve; same locality as for preceding; Roadian, Middle Permian; MNHN. F. F 63460 • 43 left valves; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, samples GM 1, GM 2; Roadian, Middle Permian; MNHN. F. F 63499.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	description	Dimensions L = 981 – 1317 µm; H = 607 – 846 µm (Fig. 5 G, only complete left valves measured, not considering spines). Description Sub-rectangular in lateral outline with Hmax around mid-L and Lmax around mid-H; dorsal margin uniformly convex with ADB straight and short; strong overlap of LV on RV along entire dorsal margin, much narrower along venter; PB steep, short and concave; dorsal margin transformed into nodular blade with 6 small triangular nodules; AB large with maximum of curvature around upper ⅓ rd and AVB plump, very convex; ventral margin straightly to slightly concave around mid-L; PB reduced, relatively large with maximum of curvature around mid-H; AB and PB slightly compressed laterally, prolonged by thick, short horizontal spines; surface smooth. Occurrence Samples GM 1, GM 2, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF5DC335FDEA56E36527EB90.taxon	discussion	Remarks Ceratobairdia pratti sp. nov. is unique among species of Ceratobairdia known to date by the disposition of nodules along a nodular blade at LV and by the spines terminating AB and PB.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF52C335FE1954166395E8A2.taxon	description	Fig. 11 H – I	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF52C335FE1954166395E8A2.taxon	materials_examined	Material examined USA • 1 left valve; Guadalupe Mountains, West Texas, Williams Ranch Member, Cutoff Formation, Quarry section, sample GM 2; Roadian, Middle Permian; MNHN. F. F 63461 • 1 left valve; same locality as for preceding but sample GM 4; Roadian, Middle Permian; MNHN. F. F 63462.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF52C335FE1954166395E8A2.taxon	distribution	Occurrence Central Thailand, Artinskian, Roadian?, Early – Middle Permian (Chitnarin et al. 2017); samples GM 2, GM 4, Quarry section, Williams Ranch Member, Cutoff Formation, Guadalupe Mountains, West Texas, USA, Roadian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF52C335FE5A57116568EA82.taxon	type_taxon	Type species Petasobairdia bicornuta Chen in Chen & Shi, 1982 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF53C334FDED537A6239EEBA.taxon	type_taxon	Type species Microcheilus distortus Geis, 1932 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF53C336FD80503C63C9EE01.taxon	description	Fig. 11 L	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF53C336FD80503C63C9EE01.taxon	materials_examined	Material examined USA • 1 complete carapace; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63465 • 1 left valve; same locality as for preceding but sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63472.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF53C336FD80503C63C9EE01.taxon	distribution	Occurrence Chishia Limestone, Kwanshan, Lungtan, China, Kungurian, Early Permian (Chen 1958); Jurong, China, Kungurian, Early Permian (Chen & Bao 1986); samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF51C331FE71568E6294ED63.taxon	type_taxon	Type species Denticupachydomella spinosa Yuan in Yuan et al., 2009 by original designation.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF51C331FE71568E6294ED63.taxon	diagnosis	Original diagnosis “ A new Pachydomellidae genus with left valve having straight dorsal border, two horny dorsal spines erecting at the anterior cardinal angle, one stronger spine at the posterior cardinal angle, three denticles along dorsal border, one posteroventral spine and pustulous lateral surface. ” (from Yuan et al. 2009: 392 – 393). Emended diagnosis A new genus with a relatively massive postero-ventral spine, spines of various morphology and strength developed along the dorsal margin of the left valve and surface pustulose.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF51C331FE71568E6294ED63.taxon	discussion	Remarks The thorough comparison of ornate Microcheilinellidae revealed that all the above-mentioned species share postero-ventral spines on both valves and spines / nodules / pustules along the dorsal margin and over the lateral surface. Conversely, the two horny dorsal spines and the three denticles along the dorsal border originally described by Yuan et al. (2009) as of generic significance to the newly erected genus Denticupachydomella rather appear as variations of the morphology and strength of the spines, thus being of specific significance. The diagnosis of Denticupachydomella Yuan in Yuan et al., 2009 is here emended to clarify this issue of generic versus specific characters.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	description	urn: lsid: zoobank. org: act: 89 B 99 A 6 B-AD 6 C- 43 DD-BAAD-D 85 F 291 FCBD 3 Fig 5 H, 11 P – Q	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	diagnosis	Diagnosis A species of Denticupachydomella with a row of nodules uniform in size along DB of LV and a surface ornamented by nodules.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	etymology	Etymology After the Bell Canyon Formation (Middle Permian, West Texas) that yielded this new species.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	materials_examined	Material examined Holotype USA • complete carapace, (Fig. 11 P); Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 4 (GM 5); Capitanian, Middle Permian; MNHN. F. F 63469. Paratype USA • 1 left valve, (Fig. 11 Q); Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, sample 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63470. Additional material USA • 1 complete carapace, 13 valves; Guadalupe Mountains, West Texas, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, MKCS 1 section, samples 4 (GM 5) and 2 (GM 6); Capitanian, Middle Permian; MNHN. F. F 63500.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	description	Dimensions L = 387 – 756 µm; H = 247 – 433 µm (Fig. 5 H). Description Small carapace sub-rectangular, H / L = 0.57 – 0.69; DB straight on both valves; row of nodules long DB of LV; AB with quite large radius of curvature with maximum located below mid-H; VB almost straight at both valves; PB with large radius of curvature for genus with maximum of curvature located in lower part of H; presence of spine in posteroventral part of carapace; overlap of LV on RV all around carapace; presence of nodules on surface of both valves. Occurrence Samples 4 (GM 5) and 2 (GM 6), MKCS 1 section, ‘ McKittrick Canyon’ Member, Bell Canyon Formation, Guadalupe Mountains, West Texas, USA, Capitanian, Middle Permian (this work).	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
21095E52CF56C330FE7B5076656AEDFE.taxon	discussion	Remarks Denticupachydomella bellcanyonensis sp. nov. is very similar to the type species Denticupachydomella spinosa Yuan in Yuan et al., 2009 from the Changhsingian of South China (Yuan et al. 2009) but is larger and lacks the two horny spines at the anterior and posterior cardinal angles. Denticupachydomella bellcanyonensis sp. nov. differs from Denticupachydomella multinodosa (Forel in Crasquin et al. 2010) from the Changhsingian (Late Permian) of Sichuan, south-west China (Crasquin et al. 2010) by the presence of a postero-ventral spine and by the organisation of nodules along dorsal and ventral margins at both valves. Herein, the dorso-central shoulder at RV is absent and the surface is covered by nodules. The species from the Late Capitanian of the Penglaitan section (Guadalupuan – Lopingian GSSP) in Guangxi, South China (Zazzali 2016: fig. 13 o – p, unpublished material) differs from Denticupachydomella bellcanyonensis sp. nov. by a more elongate carapace and a PB with smaller radius of curvature. The species from the Penglaitan section is also new and has to be described.	en	Tarnac, Anaëlle, Forel, Marie-Béatrice, Nestell, Galina, Nestell, Merlynd, Crasquin, Sylvie (2021): Middle Permian ostracods (Crustacea) from the Guadalupe Mountains, West Texas, USA. European Journal of Taxonomy 770: 1-60, DOI: https://doi.org/10.5852/ejt.2021.770.1499, URL: http://dx.doi.org/10.5852/ejt.2021.770.1499
